1cf79db28e
The root i2c adapter lock is then no longer held by the i2c mux during accesses behind the i2c gate, and such accesses need to take that lock just like any other ordinary i2c accesses do. So, declare the i2c gate mux-locked, and zap the regmap overrides that makes the i2c accesses unlocked and use plain old regmap accesses. This also removes the need for the regmap wrappers used by rtl2832_sdr, so deconvolute the code further and provide the regmap handle directly instead of the wrapper functions. Tested-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*
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* Realtek RTL2832 DVB-T demodulator driver
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*
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* Copyright (C) 2012 Thomas Mair <thomas.mair86@gmail.com>
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* Copyright (C) 2012-2014 Antti Palosaari <crope@iki.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef RTL2832_H
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#define RTL2832_H
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#include <linux/dvb/frontend.h>
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#include <linux/i2c-mux.h>
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/**
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* struct rtl2832_platform_data - Platform data for the rtl2832 driver
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* @clk: Clock frequency (4000000, 16000000, 25000000, 28800000).
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* @tuner: Used tuner model.
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* @get_dvb_frontend: Get DVB frontend.
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* @get_i2c_adapter: Get I2C adapter.
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* @slave_ts_ctrl: Control slave TS interface.
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* @pid_filter: Set PID to PID filter.
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* @pid_filter_ctrl: Control PID filter.
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*/
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struct rtl2832_platform_data {
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u32 clk;
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/*
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* XXX: This list must be kept sync with dvb_usb_rtl28xxu USB IF driver.
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*/
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#define RTL2832_TUNER_FC2580 0x21
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#define RTL2832_TUNER_TUA9001 0x24
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#define RTL2832_TUNER_FC0012 0x26
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#define RTL2832_TUNER_E4000 0x27
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#define RTL2832_TUNER_FC0013 0x29
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#define RTL2832_TUNER_R820T 0x2a
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#define RTL2832_TUNER_R828D 0x2b
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#define RTL2832_TUNER_SI2157 0x2c
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u8 tuner;
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struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
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struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
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int (*slave_ts_ctrl)(struct i2c_client *, bool);
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int (*pid_filter)(struct dvb_frontend *, u8, u16, int);
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int (*pid_filter_ctrl)(struct dvb_frontend *, int);
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/* private: Register access for SDR module use only */
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struct regmap *regmap;
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};
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#endif /* RTL2832_H */
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